General Information:
Chemical Formula:CuFeS2
Composition:(Molecular Weight = 183.53 gm)Iron 30.43 %
FeCopper 34.63 %
CuSulfur 34.94 %
S Empirical Formula: CuFe2+S2
Environment:Common in sulfide veins and disseminated in igneous rocks.
Locality:Numerous localities world wide. The most economically important mineral in porphyry copper deposits.
Name Origin:From the Greek, chalkos, "copper" hence "Copper Pyrite."
Physical Properties: Cleavage:[112] Indistinct
Color:brass yellow or honey yellow.
Density:4.1 - 4.3, Average = 4.19
Diaphaniety:Opaque
Habits:Euhedral Crystals - Occurs as well-formed crystals showing good external form., Striated - Parallel lines on crystal surface or cleavage face., Druse - Crystal growth in a cavity whic h results in numerous crystal tipped sur
Hardness:3.5 - Copper Penny
Luminescence:None.
Luster:Metallic
Streak:greenish black
More details...
